Finding the Third Proportional to 152,986 and 331,388

Step by Step Solution

1. Step 1: Write the proportion equation
   152,986 : 331,388 = 331,388 : x
2. Step 2: Convert to fraction form
   152,986/331,388 = 331,388/x
3. Step 3: Cross multiply
   152,986x = 331,388 × 331,388
4. Step 4: Simplify right side
   152,986x = 109,818,006,544
5. Step 5: Solve for x
   x = 109,818,006,544/152,986
6. Step 6: Final answer
   x = 717,830.43